.study{
    margin-left: 40px;
}
html{
    background-color: rgb(232, 234, 235);
}
.study-topbar{
    width: 410px;
    height: 100px;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
}

.study-textbox{
    height: 100px;
    width: 2000px;
    display: flex;
    justify-content: center;
    align-items: right;
    line-height: 100px;
    font-size: 20px;
}

.study-downdrag{
    height: 40px;
    width: 210px;
    display: flex;
    justify-content: left;
    align-items: center;
    text-align: center;
}


.downdrag{
    width: 200px;
    height: 35px;
    font-size: 15px;
}

.study-detail{
    width: 650px;
}
.question-study-detail-topbar{
    width: 1250px;
    height: 46px;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    background-color: white;
    border-bottom: 1px rgba(116, 112, 112, 0.564) solid;
}

.question-detail-subject{
    width: 30px;
    height: 46px;
    display: flex;
    line-height: 46px;
    font-size: 15px;
    color: black;
    text-align: left;
}

.question-detail-operation{
    width: 80px;
    height: 46px;
    display: flex;
    line-height: 46px;
    font-size: 15px;
    color: black;
    text-align: left;
}
.question-detail-right{
    width: 60px;
    height: 46px;
    display: flex;
    line-height: 46px;
    font-size: 15px;
    color: black;
    text-align: left;
}
.question-detail-question{
    width: 540px;
    height: 46px;
    display: flex;
    line-height: 46px;
    font-size: 15px;
    color: black;
    text-align: left;
}
.question-detail-answers{
    width: 380px;
    height: 46px;
    display: flex;
    line-height: 46px;
    font-size: 15px;
    color: black;
    text-align: left;
}

.study-detail-footbar{
    width: 650px;
    height: 50px;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    background-color: transparent;
}

.case-total{
    height: 50px;
    width: 50px;
    line-height: 50px;
    text-align: center;
    font-size: 15px;
    margin-right: 100px;
}

.case-pagesize{
    height: 50px;
    width: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-right: 20px;
}

.pagesize-select{
    height: 30px;
    width: 100px;
    text-align: center;
}

.change-page{
    height: 30px;
    width: 100px;
    margin-right: 20px;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    background-color: white;
}
.last-page{
    height: 30px;
    width: 25px;
    display: flex;
    justify-content: center;
    align-items: center;
}
.left-arrow{
    width: 7px;
    height: 7px;
    border-top: 2px solid #867f7a;
    border-right: 2px solid #867f7a;
    transform: rotate(-135deg);
}
.current-page{
    height: 30px;
    width: 50px;
    font-size: 15px;
    text-align: center;
    line-height: 30px;
}

.next-page{
    height: 30px;
    width: 25px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.right-arrow{
    width: 7px;
    height: 7px;
    border-top: 2px solid #867f7a;
    border-right: 2px solid #867f7a;
   transform: rotate(45deg);
}

.goto-page{
    width: 110px;
    height: 50px;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
}

#target-page{
    width: 40px;
    height: 20px;
    margin-left: 4px;
    margin-right: 4px;
}
.question-case-content{
    height: 750px;
    width: 520px;
    margin-left: 40px;
    margin-right: 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
}
#case-create-name-question{
    height: 100px;
    width: 520px;
    position: relative;
    right: -15px;
    top: 8px;
}
.right-answer{
    position: relative;
    width: 100px;
    left: 40px;
}
.question-case-content-text{
    height: 80px;
    width: 520px;
    margin-bottom: 20px;
}

.question-case-footbutton {
    -webkit-user-select: none;
    user-select: none;
    cursor: pointer;
    font-size: 15px;
    width: 30px;
    height: 30px;
    position: relative;
    line-height: 30px;
    padding: 0 15px;
    border-radius: 5px;
    background-color: #1B9AF7;
    border-color: #1B9AF7;
    color: #FFF;
    margin-top: 40px;
    margin-left: 10px;
    right: -30px;
    top: -20px;
}
.choose-subject{
    position: relative;
    left: 50px;
}